ObservableJs
Observables for Javascript and Typescript
A library that creates a Observable class that let's you subscribe to a value and get notified when that value changes
Usage
Create an Observable
const observable = new Observable<T>(initalValue);
T - The type of the value stored in the observable
Change the value of an Observable
const observable = new Observable<T>(initalValue);
observable.mutate(operation);
operation:(val \<T>)=>T - An operation to be applied on the current value in the Observable. Val is the current value in that Observable. An operation should return a new value for that observable
Subscribing to an Observable
const observable = new Observable<T>(initalValue);
observable.subscribe(handler,options?)
handler : (value:T)=>void | Promise\<any> - A function that is called whenever a new value (val) is being issued by the Observable
options:
-
await: boolean (default: false) - Whether or not the result of the handler should be awaited, in case it returns a Promise -
fireOnSubscribe: boolean (default: false) - Whether or not the hanlder should be called after the subscription -
Priority: number (default: 0) - A value that determins the order in which the handlers should be executed. Greater priority means this handler will be executed sooner